[Patch v5 12/24] drm/amdkfd: CRIU checkpoint and restore queue mqds

From: David Yat Sin david.yatsin@amd.com

Checkpoint contents of queue MQD's on CRIU dump and restore them during CRIU restore.

Signed-off-by: David Yat Sin david.yatsin@amd.com Signed-off-by: Rajneesh Bhardwaj rajneesh.bhardwaj@amd.com --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +- drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c | 2 +- .../drm/amd/amdkfd/kfd_device_queue_manager.c | 73 +++++++- .../drm/amd/amdkfd/kfd_device_queue_manager.h | 12 +- drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h | 7 + .../gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | 70 ++++++++ .../gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c | 71 ++++++++ .../gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c | 71 ++++++++ .../gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c | 72 ++++++++ drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 5 + .../amd/amdkfd/kfd_process_queue_manager.c | 157 ++++++++++++++++-- 11 files changed, 516 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index d35911550792..999672602252 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -311,7 +311,7 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, p->pasid, dev->id);

- err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, &queue_id, NULL, + err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, &queue_id, NULL, NULL, &doorbell_offset_in_process); if (err != 0) goto err_create_queue; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c index 0c50e67e2b51..3a5303ebcabf 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c @@ -185,7 +185,7 @@ static int dbgdev_register_diq(struct kfd_dbgdev *dbgdev) properties.type = KFD_QUEUE_TYPE_DIQ;

status = pqm_create_queue(dbgdev->pqm, dbgdev->dev, NULL, - &properties, &qid, NULL, NULL); + &properties, &qid, NULL, NULL, NULL);

if (status) { pr_err("Failed to create DIQ\n"); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index 13317d2c8959..42933610d4e1 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -322,7 +322,8 @@ static void deallocate_vmid(struct device_queue_manager *dqm, static int create_queue_nocpsch(struct device_queue_manager *dqm, struct queue *q, struct qcm_process_device *qpd, - const struct kfd_criu_queue_priv_data *qd) + const struct kfd_criu_queue_priv_data *qd, + const void *restore_mqd) { struct mqd_manager *mqd_mgr; int retval; @@ -381,8 +382,14 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm, retval = -ENOMEM; goto out_deallocate_doorbell; } - mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, - &q->gart_mqd_addr, &q->properties); + + if (qd) + mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr, + &q->properties, restore_mqd); + else + mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, + &q->gart_mqd_addr, &q->properties); + if (q->properties.is_active) { if (!dqm->sched_running) { WARN_ONCE(1, "Load non-HWS mqd while stopped\n"); @@ -1334,7 +1341,8 @@ static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,

static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q, struct qcm_process_device *qpd, - const struct kfd_criu_queue_priv_data *qd) + const struct kfd_criu_queue_priv_data *qd, + const void *restore_mqd) { int retval; struct mqd_manager *mqd_mgr; @@ -1380,8 +1388,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q, * updates the is_evicted flag but is a no-op otherwise. */ q->properties.is_evicted = !!qpd->evicted; - mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, - &q->gart_mqd_addr, &q->properties); + + if (qd) + mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr, + &q->properties, restore_mqd); + else + mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, + &q->gart_mqd_addr, &q->properties);

list_add(&q->list, &qpd->queues_list); qpd->queue_count++; @@ -1784,6 +1797,50 @@ static int get_wave_state(struct device_queue_manager *dqm, ctl_stack_used_size, save_area_used_size); }

+static void get_queue_checkpoint_info(struct device_queue_manager *dqm, + const struct queue *q, + u32 *mqd_size) +{ + struct mqd_manager *mqd_mgr; + enum KFD_MQD_TYPE mqd_type = + get_mqd_type_from_queue_type(q->properties.type); + + dqm_lock(dqm); + mqd_mgr = dqm->mqd_mgrs[mqd_type]; + *mqd_size = mqd_mgr->mqd_size; + + dqm_unlock(dqm); +} + +static int checkpoint_mqd(struct device_queue_manager *dqm, + const struct queue *q, + void *mqd) +{ + struct mqd_manager *mqd_mgr; + int r = 0; + enum KFD_MQD_TYPE mqd_type = + get_mqd_type_from_queue_type(q->properties.type); + + dqm_lock(dqm); + + if (q->properties.is_active || !q->device->cwsr_enabled) { + r = -EINVAL; + goto dqm_unlock; + } + + mqd_mgr = dqm->mqd_mgrs[mqd_type]; + if (!mqd_mgr->checkpoint_mqd) { + r = -EOPNOTSUPP; + goto dqm_unlock; + } + + mqd_mgr->checkpoint_mqd(mqd_mgr, q->mqd, mqd); + +dqm_unlock: + dqm_unlock(dqm); + return r; +} + static int process_termination_cpsch(struct device_queue_manager *dqm, struct qcm_process_device *qpd) { @@ -1961,6 +2018,8 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev) dqm->ops.restore_process_queues = restore_process_queues_cpsch; dqm->ops.get_wave_state = get_wave_state; dqm->ops.reset_queues = reset_queues_cpsch; + dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info; + dqm->ops.checkpoint_mqd = checkpoint_mqd; break; case KFD_SCHED_POLICY_NO_HWS: /* initialize dqm for no cp scheduling */ @@ -1980,6 +2039,8 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev) dqm->ops.restore_process_queues = restore_process_queues_nocpsch; dqm->ops.get_wave_state = get_wave_state; + dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info; + dqm->ops.checkpoint_mqd = checkpoint_mqd; break; default: pr_err("Invalid scheduling policy %d\n", dqm->sched_policy); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h index 76cc5e2a9733..fb6aa2a1ca0f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h @@ -83,13 +83,17 @@ struct device_process_node { * control stack, if kept in the MQD, to the given userspace address. * * @reset_queues: reset queues which consume RAS poison + * @get_queue_checkpoint_info: Retrieves queue size information for CRIU checkpoint. + * + * @checkpoint_mqd: checkpoint queue MQD contents for CRIU. */

struct device_queue_manager_ops { int (*create_queue)(struct device_queue_manager *dqm, struct queue *q, struct qcm_process_device *qpd, - const struct kfd_criu_queue_priv_data *qd); + const struct kfd_criu_queue_priv_data *qd, + const void *restore_mqd);

int (*destroy_queue)(struct device_queue_manager *dqm, struct qcm_process_device *qpd, @@ -140,6 +144,12 @@ struct device_queue_manager_ops {

int (*reset_queues)(struct device_queue_manager *dqm, uint16_t pasid); + void (*get_queue_checkpoint_info)(struct device_queue_manager *dqm, + const struct queue *q, u32 *mqd_size); + + int (*checkpoint_mqd)(struct device_queue_manager *dqm, + const struct queue *q, + void *mqd); };

struct device_queue_manager_asic_ops { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h index 965e17c5dbb4..cebb2877a505 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h @@ -100,6 +100,13 @@ struct mqd_manager { u32 *ctl_stack_used_size, u32 *save_area_used_size);

+ void (*checkpoint_mqd)(struct mqd_manager *mm, void *mqd, void *mqd_dst); + + void (*restore_mqd)(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *p, + const void *mqd_src); + #if defined(CONFIG_DEBUG_FS) int (*debugfs_show_mqd)(struct seq_file *m, void *data); #endif diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c index e9a8e21e144e..83117209bc15 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c @@ -280,6 +280,72 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd, pipe_id, queue_id); }

+static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct cik_mqd *m; + + m = get_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct cik_mqd)); +} + +static void restore_mqd(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct cik_mqd *m; + + m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + m->cp_hqd_pq_doorbell_control = DOORBELL_OFFSET(qp->doorbell_off); + + pr_debug("cp_hqd_pq_doorbell_control 0x%x\n", + m->cp_hqd_pq_doorbell_control); + + qp->is_active = 0; +} + +static void checkpoint_mqd_sdma(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct cik_sdma_rlc_registers *m; + + m = get_sdma_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct cik_sdma_rlc_registers)); +} + +static void restore_mqd_sdma(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct cik_sdma_rlc_registers *m; + + m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + m->sdma_rlc_doorbell = + qp->doorbell_off << SDMA0_RLC0_DOORBELL__OFFSET__SHIFT; + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + qp->is_active = 0; +} + /* * preempt type here is ignored because there is only one way * to preempt sdma queue @@ -394,6 +460,8 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type, mqd->update_mqd = update_mqd; mqd->destroy_mqd = destroy_mqd; mqd->is_occupied = is_occupied; + mqd->checkpoint_mqd = checkpoint_mqd; + mqd->restore_mqd = restore_mqd; mqd->mqd_size = sizeof(struct cik_mqd); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd; @@ -434,6 +502,8 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type, mqd->update_mqd = update_mqd_sdma; mqd->destroy_mqd = destroy_mqd_sdma; mqd->is_occupied = is_occupied_sdma; + mqd->checkpoint_mqd = checkpoint_mqd_sdma; + mqd->restore_mqd = restore_mqd_sdma; mqd->mqd_size = sizeof(struct cik_sdma_rlc_registers); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd_sdma; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c index d74d8a6ac27a..4ddf5b45c42a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c @@ -285,6 +285,41 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd, return 0; }

+static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct v10_compute_mqd *m; + + m = get_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct v10_compute_mqd)); +} + +static void restore_mqd(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct v10_compute_mqd *m; + + m = (struct v10_compute_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + m->cp_hqd_pq_doorbell_control = + qp->doorbell_off << + CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT; + pr_debug("cp_hqd_pq_doorbell_control 0x%x\n", + m->cp_hqd_pq_doorbell_control); + + qp->is_active = 0; +} + static void init_mqd_hiq(struct mqd_manager *mm, void **mqd, struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, struct queue_properties *q) @@ -373,6 +408,38 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd, return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->adev, mqd); }

+static void checkpoint_mqd_sdma(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct v10_sdma_mqd *m; + + m = get_sdma_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct v10_sdma_mqd)); +} + +static void restore_mqd_sdma(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct v10_sdma_mqd *m; + + m = (struct v10_sdma_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + m->sdmax_rlcx_doorbell_offset = + qp->doorbell_off << SDMA0_RLC0_DOORBELL_OFFSET__OFFSET__SHIFT; + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + qp->is_active = 0; +} + #if defined(CONFIG_DEBUG_FS)

static int debugfs_show_mqd(struct seq_file *m, void *data) @@ -417,6 +484,8 @@ struct mqd_manager *mqd_manager_init_v10(enum KFD_MQD_TYPE type, mqd->is_occupied = is_occupied; mqd->mqd_size = sizeof(struct v10_compute_mqd); mqd->get_wave_state = get_wave_state; + mqd->checkpoint_mqd = checkpoint_mqd; + mqd->restore_mqd = restore_mqd; #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd; #endif @@ -460,6 +529,8 @@ struct mqd_manager *mqd_manager_init_v10(enum KFD_MQD_TYPE type, mqd->update_mqd = update_mqd_sdma; mqd->destroy_mqd = destroy_mqd_sdma; mqd->is_occupied = is_occupied_sdma; + mqd->checkpoint_mqd = checkpoint_mqd_sdma; + mqd->restore_mqd = restore_mqd_sdma; mqd->mqd_size = sizeof(struct v10_sdma_mqd); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd_sdma; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c index 326eb2285029..18ad7669eedf 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c @@ -340,6 +340,41 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd, return 0; }

+static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct v9_mqd *m; + + m = get_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct v9_mqd)); +} + +static void restore_mqd(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct v9_mqd *m; + + m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + m->cp_hqd_pq_doorbell_control = + qp->doorbell_off << + CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT; + pr_debug("cp_hqd_pq_doorbell_control 0x%x\n", + m->cp_hqd_pq_doorbell_control); + + qp->is_active = 0; +} + static void init_mqd_hiq(struct mqd_manager *mm, void **mqd, struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, struct queue_properties *q) @@ -428,6 +463,38 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd, return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->adev, mqd); }

+static void checkpoint_mqd_sdma(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct v9_sdma_mqd *m; + + m = get_sdma_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct v9_sdma_mqd)); +} + +static void restore_mqd_sdma(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct v9_sdma_mqd *m; + + m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + m->sdmax_rlcx_doorbell_offset = + qp->doorbell_off << SDMA0_RLC0_DOORBELL_OFFSET__OFFSET__SHIFT; + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + qp->is_active = 0; +} + #if defined(CONFIG_DEBUG_FS)

static int debugfs_show_mqd(struct seq_file *m, void *data) @@ -470,6 +537,8 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type, mqd->destroy_mqd = destroy_mqd; mqd->is_occupied = is_occupied; mqd->get_wave_state = get_wave_state; + mqd->checkpoint_mqd = checkpoint_mqd; + mqd->restore_mqd = restore_mqd; mqd->mqd_size = sizeof(struct v9_mqd); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd; @@ -510,6 +579,8 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type, mqd->update_mqd = update_mqd_sdma; mqd->destroy_mqd = destroy_mqd_sdma; mqd->is_occupied = is_occupied_sdma; + mqd->checkpoint_mqd = checkpoint_mqd_sdma; + mqd->restore_mqd = restore_mqd_sdma; mqd->mqd_size = sizeof(struct v9_sdma_mqd); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd_sdma; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c index d456e950ce1d..9fdc67b60bb4 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c @@ -306,6 +306,42 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd, return 0; }

+static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct vi_mqd *m; + + m = get_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct vi_mqd)); +} + +static void restore_mqd(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct vi_mqd *m; + + m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + m->cp_hqd_pq_doorbell_control = + qp->doorbell_off << + CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT; + pr_debug("cp_hqd_pq_doorbell_control 0x%x\n", + m->cp_hqd_pq_doorbell_control); + + qp->is_active = 0; +} + + static void init_mqd_hiq(struct mqd_manager *mm, void **mqd, struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, struct queue_properties *q) @@ -399,6 +435,38 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd, return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->adev, mqd); }

+static void checkpoint_mqd_sdma(struct mqd_manager *mm, void *mqd, void *mqd_dst) +{ + struct vi_sdma_mqd *m; + + m = get_sdma_mqd(mqd); + + memcpy(mqd_dst, m, sizeof(struct vi_sdma_mqd)); +} + +static void restore_mqd_sdma(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *qp, + const void *mqd_src) +{ + uint64_t addr; + struct vi_sdma_mqd *m; + + m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr; + addr = mqd_mem_obj->gpu_addr; + + memcpy(m, mqd_src, sizeof(*m)); + + m->sdmax_rlcx_doorbell = + qp->doorbell_off << SDMA0_RLC0_DOORBELL__OFFSET__SHIFT; + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + + qp->is_active = 0; +} + #if defined(CONFIG_DEBUG_FS)

static int debugfs_show_mqd(struct seq_file *m, void *data) @@ -441,6 +509,8 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type, mqd->destroy_mqd = destroy_mqd; mqd->is_occupied = is_occupied; mqd->get_wave_state = get_wave_state; + mqd->checkpoint_mqd = checkpoint_mqd; + mqd->restore_mqd = restore_mqd; mqd->mqd_size = sizeof(struct vi_mqd); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd; @@ -481,6 +551,8 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type, mqd->update_mqd = update_mqd_sdma; mqd->destroy_mqd = destroy_mqd_sdma; mqd->is_occupied = is_occupied_sdma; + mqd->checkpoint_mqd = checkpoint_mqd_sdma; + mqd->restore_mqd = restore_mqd_sdma; mqd->mqd_size = sizeof(struct vi_sdma_mqd); #if defined(CONFIG_DEBUG_FS) mqd->debugfs_show_mqd = debugfs_show_mqd_sdma; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index 59125d8f16a7..1c62abe0dbd5 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -1158,6 +1158,7 @@ int pqm_create_queue(struct process_queue_manager *pqm, struct queue_properties *properties, unsigned int *qid, const struct kfd_criu_queue_priv_data *q_data, + const void *restore_mqd, uint32_t *p_doorbell_offset_in_process); int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid); int pqm_update_queue_properties(struct process_queue_manager *pqm, unsigned int qid, @@ -1180,6 +1181,10 @@ int amdkfd_fence_wait_timeout(uint64_t *fence_addr, uint64_t fence_value, unsigned int timeout_ms);

+int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm, + unsigned int qid, + u32 *mqd_size); + /* Packet Manager */

#define KFD_FENCE_COMPLETED (100) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c index 8afe6879b861..844917c1c346 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c @@ -208,6 +208,7 @@ int pqm_create_queue(struct process_queue_manager *pqm, struct queue_properties *properties, unsigned int *qid, const struct kfd_criu_queue_priv_data *q_data, + const void *restore_mqd, uint32_t *p_doorbell_offset_in_process) { int retval; @@ -272,7 +273,7 @@ int pqm_create_queue(struct process_queue_manager *pqm, goto err_create_queue; pqn->q = q; pqn->kq = NULL; - retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data); + retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data, restore_mqd); print_queue(q); break;

@@ -292,7 +293,7 @@ int pqm_create_queue(struct process_queue_manager *pqm, goto err_create_queue; pqn->q = q; pqn->kq = NULL; - retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data); + retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data, restore_mqd); print_queue(q); break; case KFD_QUEUE_TYPE_DIQ: @@ -517,12 +518,25 @@ int pqm_get_wave_state(struct process_queue_manager *pqm, save_area_used_size); }

+static int get_queue_data_sizes(struct kfd_process_device *pdd, struct queue *q, uint32_t *mqd_size) +{ + int ret; + + ret = pqm_get_queue_checkpoint_info(&pdd->process->pqm, q->properties.queue_id, mqd_size); + if (ret) + pr_err("Failed to get queue dump info (%d)\n", ret); + + return ret; +} + int kfd_process_get_queue_info(struct kfd_process *p, uint32_t *num_queues, uint64_t *priv_data_sizes) { + uint32_t extra_data_sizes = 0; struct queue *q; int i; + int ret;

*num_queues = 0;

@@ -534,23 +548,53 @@ int kfd_process_get_queue_info(struct kfd_process *p, if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || q->properties.type == KFD_QUEUE_TYPE_SDMA || q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { - + uint32_t mqd_size; *num_queues = *num_queues + 1; + + ret = get_queue_data_sizes(pdd, q, &mqd_size); + if (ret) + return ret; + + extra_data_sizes += mqd_size; } else { pr_err("Unsupported queue type (%d)\n", q->properties.type); return -EOPNOTSUPP; } } } - *priv_data_sizes = *num_queues * sizeof(struct kfd_criu_queue_priv_data); + *priv_data_sizes = extra_data_sizes + + (*num_queues * sizeof(struct kfd_criu_queue_priv_data));

return 0; }

-static void criu_checkpoint_queue(struct kfd_process_device *pdd, +static int pqm_checkpoint_mqd(struct process_queue_manager *pqm, unsigned int qid, void *mqd) +{ + struct process_queue_node *pqn; + + pqn = get_queue_by_qid(pqm, qid); + if (!pqn) { + pr_debug("amdkfd: No queue %d exists for operation\n", qid); + return -EFAULT; + } + + if (!pqn->q->device->dqm->ops.checkpoint_mqd) { + pr_err("amdkfd: queue dumping not supported on this device\n"); + return -EOPNOTSUPP; + } + + return pqn->q->device->dqm->ops.checkpoint_mqd(pqn->q->device->dqm, pqn->q, mqd); +} + +static int criu_checkpoint_queue(struct kfd_process_device *pdd, struct queue *q, struct kfd_criu_queue_priv_data *q_data) { + uint8_t *mqd; + int ret; + + mqd = (void *)(q_data + 1); + q_data->gpu_id = pdd->dev->id; q_data->type = q->properties.type; q_data->format = q->properties.format; @@ -576,7 +620,14 @@ static void criu_checkpoint_queue(struct kfd_process_device *pdd, q_data->ctx_save_restore_area_size = q->properties.ctx_save_restore_area_size;

+ ret = pqm_checkpoint_mqd(&pdd->process->pqm, q->properties.queue_id, mqd); + if (ret) { + pr_err("Failed checkpoint queue_mqd (%d)\n", ret); + return ret; + } + pr_debug("Dumping Queue: gpu_id:%x queue_id:%u\n", q_data->gpu_id, q_data->q_id); + return ret; }

static int criu_checkpoint_queues_device(struct kfd_process_device *pdd, @@ -584,15 +635,16 @@ static int criu_checkpoint_queues_device(struct kfd_process_device *pdd, unsigned int *q_index, uint64_t *queues_priv_data_offset) { - struct kfd_criu_queue_priv_data *q_data; + unsigned int q_private_data_size = 0; + uint8_t *q_private_data = NULL; /* Local buffer to store individual queue private data */ struct queue *q; int ret = 0;

- q_data = kzalloc(sizeof(*q_data), GFP_KERNEL); - if (!q_data) - return -ENOMEM; - list_for_each_entry(q, &pdd->qpd.queues_list, list) { + struct kfd_criu_queue_priv_data *q_data; + uint64_t q_data_size; + uint32_t mqd_size; + if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE && q->properties.type != KFD_QUEUE_TYPE_SDMA && q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI) { @@ -602,19 +654,46 @@ static int criu_checkpoint_queues_device(struct kfd_process_device *pdd, break; }

- criu_checkpoint_queue(pdd, q, q_data); + ret = get_queue_data_sizes(pdd, q, &mqd_size); + if (ret) + break; + + q_data_size = sizeof(*q_data) + mqd_size; + + /* Increase local buffer space if needed */ + if (q_private_data_size < q_data_size) { + kfree(q_private_data); + + q_private_data = kzalloc(q_data_size, GFP_KERNEL); + if (!q_private_data) { + ret = -ENOMEM; + break; + } + q_private_data_size = q_data_size; + } + + q_data = (struct kfd_criu_queue_priv_data *)q_private_data; + + /* data stored in this order: priv_data, mqd */ + q_data->mqd_size = mqd_size; + + ret = criu_checkpoint_queue(pdd, q, q_data); + if (ret) + break; + q_data->object_type = KFD_CRIU_OBJECT_TYPE_QUEUE;

- ret = copy_to_user(user_priv + *queues_priv_data_offset, q_data, sizeof(*q_data)); + ret = copy_to_user(user_priv + *queues_priv_data_offset, + q_data, q_data_size); if (ret) { ret = -EFAULT; break; } - *queues_priv_data_offset += sizeof(*q_data); + *queues_priv_data_offset += q_data_size; *q_index = *q_index + 1; }

- kfree(q_data); + kfree(q_private_data);

return ret; } @@ -668,11 +747,12 @@ int kfd_criu_restore_queue(struct kfd_process *p, uint64_t max_priv_data_size) { struct kfd_criu_queue_priv_data *q_data; + uint8_t *mqd, *q_extra_data = NULL; struct kfd_process_device *pdd; - struct kfd_dev *dev; + uint64_t q_extra_data_size; struct queue_properties qp; unsigned int queue_id; - + struct kfd_dev *dev; int ret = 0;

if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size) @@ -689,6 +769,26 @@ int kfd_criu_restore_queue(struct kfd_process *p, }

*priv_data_offset += sizeof(*q_data); + q_extra_data_size = q_data->mqd_size; + + if (*priv_data_offset + q_extra_data_size > max_priv_data_size) { + ret = -EINVAL; + goto exit; + } + + q_extra_data = kmalloc(q_extra_data_size, GFP_KERNEL); + if (!q_extra_data) { + ret = -ENOMEM; + goto exit; + } + + ret = copy_from_user(q_extra_data, user_priv_ptr + *priv_data_offset, q_extra_data_size); + if (ret) { + ret = -EFAULT; + goto exit; + } + + *priv_data_offset += q_extra_data_size;

dev = kfd_device_by_id(q_data->gpu_id); if (!dev) { @@ -705,13 +805,15 @@ int kfd_criu_restore_queue(struct kfd_process *p, ret = -EFAULT; return ret; } + /* data stored in this order: mqd */ + mqd = q_extra_data;

memset(&qp, 0, sizeof(qp)); set_queue_properties_from_criu(&qp, q_data);

print_queue_properties(&qp);

- ret = pqm_create_queue(&p->pqm, pdd->dev, NULL, &qp, &queue_id, q_data, NULL); + ret = pqm_create_queue(&p->pqm, pdd->dev, NULL, &qp, &queue_id, q_data, mqd, NULL); if (ret) { pr_err("Failed to create new queue err:%d\n", ret); ret = -EINVAL; @@ -728,6 +830,27 @@ int kfd_criu_restore_queue(struct kfd_process *p, return ret; }

+int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm, + unsigned int qid, + uint32_t *mqd_size) +{ + struct process_queue_node *pqn; + + pqn = get_queue_by_qid(pqm, qid); + if (!pqn) { + pr_debug("amdkfd: No queue %d exists for operation\n", qid); + return -EFAULT; + } + + if (!pqn->q->device->dqm->ops.get_queue_checkpoint_info) { + pr_err("amdkfd: queue dumping not supported on this device\n"); + return -EOPNOTSUPP; + } + + pqn->q->device->dqm->ops.get_queue_checkpoint_info(pqn->q->device->dqm, pqn->q, mqd_size); + return 0; +} + #if defined(CONFIG_DEBUG_FS)

int pqm_debugfs_mqds(struct seq_file *m, void *data)